Weird rendered lighting, probably bad topology
It looks like to me you applied smooth shading to the object, but haven't turned on auto-smooth.
Try going into the Properties window -&gt; Object data properties -&gt; Normals -&gt; and check Auto Smooth.
Then fiddle around with the degree slider until all your curved surfaces are smooth, but the flat areas don't have this lighting error. I think the default 30° should work fine in this case.